从C语言的指针char中删除String

Question

I'm trying to remove a string from a pointer pointer char ( char **str ), my function removes the string and make duplicates of the remaining strings.

void    remove_dup(char **split, char *name)
{
    char **sp;
    sp = split;
    while (*sp != NULL)
    {
        if (strncmp(*sp, name, strlen(name)) == 0)
        {
            *sp = *(sp + 1);
            sp++;
        }
        else
            sp++;
    }
}

complete code

Answer 1

Skipping one string won't work. You need to keep track of read and unread strings.

This will remove duplicate entries

    void    remove_dup(char **split, char *name)
    {
        char **read,**write;
        read=write=split;
        char count=0;
        while (*read!=NULL){
            if (strncmp(*read, name, strlen(name)) == 0){
                if(count==0){
                    *(write++)=*(read++);   
                    count=1;
                }
                else{
                    //free string
                    read++;
                    continue;
                }
            }
            else
                *(write++)=*(read++);   
        }
        *write=0;
    }

If the duplicate entries are to be removed properly, strings must be freed properly. You should change the way you have initialized strings to be able to do that.